Sign of the times I'm afraid.
When I was in Junior school there was a book in the school library called 'Three Little Niggers' it had illustrations of black kids being chased up trees by tigers, etc.
The book itself was harmless, but the word 'Nigger' is obviously offensive and I doubt the book's still there.
Also there's a book by Agatha Christie called 10 Little Niggers that you can't buy anymore, despite that it doesn' t have any black people in it at all. It's now called; - 'and then there were none'.